11.24: Two wave pulses travel to the righta75r.o (x bped toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the followidr7eo(bp xa.5 ng pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through tam0c2zdo9fuo rb bn ovp/oqln-);5h+2qy m/2he air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmi2) +or l p b5nc vqabo-nqyumh09mf/o2do;/z2 tted wave?

  12.02: A ray of light passes straight downward through )vijk fs;5 yms103o9 bp 6pfmtthe point labeled B in the diagram shown. The ray reaches a flatt msjpvo3bmp6 0f )s;i fk519y mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light;1trd z d--cff is incident on

  05.18: A student hold 8u sxepl mo9:,jsk.s+n 8xa:fa hand mirror to observe the back of her head while standinxskj.: npe8s, 8olf 9+: uamxsg in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light (wyq wawqnkg()tq* ce)s8pfe -x z k.)1(3rioray changes direction when it enters a new mata k(tin*)(-q. w)pg fske(1r zq83ewxoqwyc)erial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength d o-6x h- hlmlmd-jo9g(.bjyrzc3* e9400 nm in a transparent material. What is the index ofredlh 9h- 9l-c y-3 (o*gmzxjb.jmd6o refraction of the material?

  98.04: As sound travels from 8ol r9 r:f*:7kies kzxdn+t3u steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a se r4 09nwm+mk1 jxnad6c7j2rh hcond medium with a different index of refraction which of the follnrc 0x42mj jkh69anhwm1 7r d+owing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning z9qhn3*fs5nv5 s ,a,j1szmzt fork of single frequency travels from air (with speed of sound fa9 z5zt, ,jsnmz531n *qshvs 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placedglq0 xpi(zek+ ;aph94 at the bottom of a swimming pool emits a sound wave that trav gapkz4lp0 x9q h(i+;eels toward the surface of the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectw+5tce3 r/ cwwangular glass block with an angle of incideewc 3 wr/+twc5nce of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a point P on a boundary as shown t,w9 f7-jix3gv3cc ns io the right. Which segment best represents w-s,cf jg 9n3viix7c3 the refracted ray?

  98.17: Which diagram best represents what h qdx+ ;uon3i(zappens to a ray of light entering air from water? Air is at the tou;3 qi+od zxn(p in all diagrams.

  94.11: The critical angle of a material is th1y,mlb hd0y :i txs:ze ur*h95e angle of incidence for which the angle ofybh tds:x1yl:0 5,z9u*hrme i refraction is:

  95.12: The principle under22khs8xp .4 koh/vio mlying fiber optics is:

  98.36: The critical angle in a transparent subs/is5q 8cx,4dctn-bt gtance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refraction of hd,se8udn1 h8 n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in matndhs 1 he8du,8erial Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish bethc1a qo m69+, cos:vtcj+uig :ween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52jvcma tuc16c+hio +,q gs:9o: has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. W((s*8 l b7pokf1u utjyhen the light makes an angle of incidence equal7 ( 1(buoujp*kfsl8 ty to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a materr0l;pck+dl z wios*/ilz m+: )ial of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the)lorc d0m;z /lkzw+ liis+*:p laser and target. The value of n is:

  95.31: A beam of lightrkmn;mvt3 l lo26wq2- passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indiceltq ;vwl-2 mm k2or63ns of refraction (n1, n2, and n3)?

  00.14: A beam of lighty:wcrf ;cpf 91 passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three fr:pc w ;9cyf1indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ra-s;h zsho qy/:y takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the h :o; z/yhssq-relation between the indices of refraction?

  09.34: The diagram be q(fv pwyc.cp(yo:u.mf7o4 z.low shows the path taken by a monochromatic light ray traveling t q..pcz.ycfy( pv uo:w 4fo(7mhrough three media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling in gl bzi60aunii/. mw aex:6vba 30ass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on thecs 89 uvdz-ey v9 4* g mazsr6ruwt90gq81jr8v surface of a rectangular block of glassrm g4vu 9*0r9 86-tc z9av j gwus1zr8eqvsy8d at an angle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelengt)tq r)b ;8kaluh 600nm is transmitted from air into a piece of glass. Which onea8q) );kltrub of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic vopb-(vl4bgkbnwjjr 8oh erd n7 9 2+b.+xm(4 light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and iwb +kbb4 xevrn mnv8d+.gjb-2porjo (7l9(4 ht is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?